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net: Add utility function to copy skb hash 

Adds skb_copy_hash to copy rxhash and l4_rxhash from one skb to another.

Signed-off-by: Tom Herbert <therbert@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Tom Herbert 2013-12-15 22:16:29 -08:00 committed by David S. Miller
parent 09323cc479
commit 3df7a74e79
2 changed files with 7 additions and 2 deletions
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6
include/linux/skbuff.h
View File

@ -764,6 +764,12 @@ static inline void skb_clear_hash_if_not_l4(struct sk_buff *skb)
skb_clear_hash(skb); skb_clear_hash(skb);
} }
static inline void skb_copy_hash(struct sk_buff *to, const struct sk_buff *from)
{
to->rxhash = from->rxhash;
to->l4_rxhash = from->l4_rxhash;
};
#ifdef NET_SKBUFF_DATA_USES_OFFSET #ifdef NET_SKBUFF_DATA_USES_OFFSET
static inline unsigned char *skb_end_pointer(const struct sk_buff *skb) static inline unsigned char *skb_end_pointer(const struct sk_buff *skb)
{ {

3
net/core/skbuff.c
View File

@ -712,9 +712,8 @@ static void __copy_skb_header(struct sk_buff *new, const struct sk_buff *old)
new->inner_network_header = old->inner_network_header; new->inner_network_header = old->inner_network_header;
new->inner_mac_header = old->inner_mac_header; new->inner_mac_header = old->inner_mac_header;
skb_dst_copy(new, old); skb_dst_copy(new, old);
new->rxhash = old->rxhash; skb_copy_hash(new, old);
new->ooo_okay = old->ooo_okay; new->ooo_okay = old->ooo_okay;
new->l4_rxhash = old->l4_rxhash;
new->no_fcs = old->no_fcs; new->no_fcs = old->no_fcs;
new->encapsulation = old->encapsulation; new->encapsulation = old->encapsulation;
#ifdef CONFIG_XFRM #ifdef CONFIG_XFRM